rudolph



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K. RUDOLPH.

COINFREED APPARATUS FOR ADMINISTERING ELECTRICITY.

Patented Mar. 9, 1897'.

rxomus PETERS ea, mmamgn. wunmemu u r (No Model.) 7 2' sheets-sheen.

K. RUDOLPH.

COIN PRBE D APPARATUS FOR ADMINISTBRING ELECTRICITY.

No. 578,526. Patented Mari 9, 1897.

UNITED STATES PATENT OEEICE.

KARL RUDOLPH, OF POESSNECK, GERMANY.

COlN-FREED APPARATUS FOR ADMINIST ERING ELECTRICITY.

SPECIFICATION forming part of Letters Patent No. 578,526, dated March 9, 1897.

Application filed March 18, 1896. Serial No. 583,836- (NO model.)

To aZZ whom it may concern-.-

7 Be it known that LKARL RUDOLPH, a subject of the Grand Duke of SaXe-Weim'er, and a resident of Poessneck, in the Duchy of Saxe- Meiningen, German Empire, have invented certain new and useful Improvements in Ooin- Freed Apparatus for Administering Electricity, of which the following is a specification.

The present invention refers to acoin-freed apparatus for administering electricity, in which the person making use of the same can increase or diminish the power of the current as desired. The power of the current attained can easily be read from a scale provided for that purpose. One of the handles of the device is rigidly connected with an inductioncoil, so that the latter can be made to cover more or less entirely the primary coil. The more fully it covers the same, and this can be measured from any suitable scale, the more powerful the induced current will be. The primany current-circuit is closed only during a certain period of time by a coin dropped in the machine, a clockwork being put in motion thereby, which again breaks the circuit after a certain time.

The invention is illustrated in the accompanying drawings.

Figure 1 is a plan View thereof, the cover being partly broken away. Fig. 2 is a longitudinal section on a vertical plane.

The mechanism of the apparatus is located in a closed box and works as follows: The coin falls through the-slot in the cover upon the guiding-groove K and slides down upon the flexible springs 6, arranged over the oval opening a. The weight of the coin separates the springs, whereby the lever m, operated by the spring, is moved. One of the extremities of the lever 92 is raised. The other presses down the straight arm of the lever 0, and the pin 1;, fixed to the latter, plunges in the mercury-contact p. In such a manner the circuit of the current generated by the dry bat tery is closed, so that the current passes through the primary coil 9 of the induction apparatus and creates an induction-current in the secondary coil f. Said current leads to the spherical handles a a, which are taken hold of by the person wishing to use the machine. One of the handles, that to the right, is rigidly connected with the induction-coil in such a manner that it can be more or less drawn over the primary coil. How far it is drawn over can be read from the scale on the cover at the side of the slot through which the shaft of the ball passes. The spiral springs d serve to bring back the coil to its original position.

The electrifying lasts aboutone-half minute andafter that the current-circuit is broken. A wheel h is rotated bya clockwork which revolves once in one minute and has two notches on its periphery, into which the hook-shaped end of the lever 0 engages. When the straight end of the lever o is depressed by the coin dropped in the slot, as described, the hook releases the wheel, so that the wheel 72. can rotate. The hook slides then upon the periphery of the wheel 72., and after the coin has fallen off or has been pushed forward by the bolt 1' it engages the second notch of the wheel h after half a minute. The apparatus then stops.

A bell r can be connected with the apparatus which can be put in or out of circuit by suitable contacts.

I claim 1. A coin-freed electrifying-machine, comprisingtwo springs arranged below the slot through which the coin is dropped, a lever mechanism operated by the movement of one of the springsunder the weight of the coin, and connections for controlling and operat ing the electric circuit, substantially as described.

2. In combination, the springs e, eadapted to receive the coin,the wheel h having notches, the lever 0, the electric contact p, w controlled thereby, and the levers n and m between the lever 0 and the spring-contacts and bearing on one of said contacts, substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

I K. RUDOLPH.

Witnesses:

RICHARD PESER, F. O. HERM. KARoL. 

